Reef-sinking cultivation method and device of benthic aquatic products

Abstract

The invention discloses reef-sinking cultivation method and device which are beneficial to the growth of benthic aquatic products, can avoid cultivated aquatic products from being caught by natural enemies and escaping and is convenient to catch. The cultivation method comprises the following steps of: fixing a net door on a window of a concrete-made hollow reef body, tying a mooring rope on a hanging eye of the hollow reef body and putting the reef body at the bottom of the sea; soaking the concrete-made hollow reef body in the sea till harmful substances in the reef body is extracted and algae is attached to the hollow reef body; opening the net door, putting seedlings of the benthic aquatic products into the hollow reef body, closing and fixing the net door; cultivating the seedlings of the benthic aquatic products until reaching setting specifications, and opening the net door. The special device is the hollow reef body (1), the window (2) is arranged on the reef body (1), and a net frame (3) is arranged on the window (2) and connected with the reef body (1) by a fixing device.

Description

Technical field: [0001] The invention relates to a method and device for artificially increasing the culture of benthic aquatic products, in particular to a benthic aquatic product that is beneficial to the growth of benthic aquatic products, can prevent the cultured aquatic products from being predated by natural enemies, escapes, and is convenient for harvesting. Breeding method and device. Background technique: [0002] At present, most of the artificial breeding methods for benthic aquatic products (scallops, sea cucumbers, abalones, sea urchins, etc.) are to raise seedlings first, and then sow the seedlings to grow in natural water bodies suitable for their growth substrates, so as to strengthen the growth of this species. The biological population density in this sea area achieves the purpose of multiplication, and after cultivation, trawling nets or divers are used to fish for diving. The existing seedling raising methods are as follows: one is to collect high-qualit...

AI Technical Summary

Problems solved by technology

[0003] 1. On the one hand, the larvae bred by sowing to natural water bodies will be preyed by natural enemies (research shows that each starfish can prey on 6-10 scallops per day), on the other hand, due to the long-term survival in the artificially created "comfortable" environment , weaker adaptability, both lead to lower survival rate of seedlings

[0004] 2. Trawl fishing has the problems of serious damage to the bottom, high damage rate to grown-up aquatic products and low catch rate; although diving fishing by divers avoids damage to the bottom and high damage rate of aquatic products problem, but the harvesting efficiency is not high, it is not suitable for large-scale production needs and diving harvesting is restricted by season (water temperature) and diving depth

[0005] 3. The aquaculture sea area must be suitable for benthic organisms to survive (mud bottom), and the scale of aquaculture is limited; due to aquaculture in open sea areas, there are situations where aquaculture products escape, causing losses to aquaculture enterprises

[0006] For this reason, there are also a small amount of methods of using hanging cages or ear piercing to increase culture, but they have changed the benthic habits of benthic aquatic products, and because the upper seawater light and temperature fluctuate greatly, and the nutrients are not as rich as the bottom layer, it is not conducive to Growth of benthic aquatic products

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